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  <a name="EN-US_TOPIC_0000002199966781"></a><a name="EN-US_TOPIC_0000002199966781"></a>
  <h1 class="topictitle1">The Backup Job Failed and The Error Details Show that the Client Failed to Execute the Mount Operation</h1>
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   <div class="section">
    <h4 class="sectiontitle">Symptom</h4>
    <p>The VM backup job failed to be executed. The error details show that the client failed to execute the mount operation.</p>
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    <h4 class="sectiontitle">Possible Cause</h4>
    <p>This problem is caused by the kernel issue of Red Hat 7.6.</p>
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    <h4 class="sectiontitle">Troubleshooting</h4>
    <ol>
     <li><span>Use PuTTY to log in to the host where the client is to be installed as user <strong id="EN-US_TOPIC_0000002199966781__en-us_topic_0000002164790296_en-us_topic_0000002200031305_b916917212">root</strong>.</span></li>
     <li><span>Run the following commands to check whether the OS kernel version of the host where the client is installed is <strong>3.10.0-957.5.1.el7</strong> or later:</span><p></p><p><strong>cat /etc/redhat-release</strong></p> <p><strong>uname -r</strong></p>
      <ul>
       <li>If yes, contact technical support.</li>
       <li>If not, go to <a href="#EN-US_TOPIC_0000002199966781__li2908144216479">3</a>.</li>
      </ul> <p></p></li>
     <li id="EN-US_TOPIC_0000002199966781__li2908144216479"><a name="EN-US_TOPIC_0000002199966781__li2908144216479"></a><a name="li2908144216479"></a><span>Download the Red Hat kernel package of <strong>3.10.0-957.5.1.el7</strong> or a later version and upload the downloaded kernel package to the host where the client is installed.</span></li>
     <li><span>Go to the directory where the installation package is stored and run the following command to install the kernel package:</span><p></p><p><strong>rpm -ivh</strong> <em>Kernel package name</em></p> <p>Example:</p> <pre class="screen">rpm -ivh kernel-3.10.0-957.5.1.el7.x86_64.rpm</pre> <p></p></li>
     <li><span>After restarting the OS, run the following command to check whether the current kernel version is the installed one:</span><p></p><p><strong>uname -r</strong></p> <p></p></li>
    </ol>
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     <strong>Parent topic:</strong> <a href="en-us_topic_0000002199966825.html">FAQs</a>
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